Heiko Thermal Plus 12, Руководство пользователя

Страница: 105 / 110

Failure
Unit can’t start up
1. No power supply
2. Fuse is broken or circuit
breaker is disconnected
2. Check if it's open circuit or if the motor coil is
earthed. Then change a fuse and reset the breaker,
check if the circuit is stable or the connection is well.
3. Some kind of protection
works
3. Check which protection is working, and clear the
protection, then restart the unit.
4. Wiring is loose
4. Check the wire connection and tighten the screws on
the terminal
5. compressor fails 5. Change a compressor
Fan fails to run
1. Fan motor wire loose 1. Check the wire connections.
2. fan motor failure
2. Change fan motor.
Low heating
performance
1. The coil fins are very dirty
2. Air inlet is blocked
3. Insufficient of refrigerant
1. Clean the evaporator coil
2. Remove any object that blocks the air circulation of
the unit.
3. Inspect the unit for leakage and fix it if any.
Discharge all refrigerant and charge the unit again with
correct amount.
Cause Solution
1. Check the power supply
Too high compressor
discharge pressure
1. Too much refrigerant
2. Air exists in refrigerantion
system
3. Inadequate water flow
4. Too high water temperature
1.Discharge all refrigerant and charge the unit again
with right amount.
2. Discharge all refrigerant and charge the unit again
with right amount.
3. Check the water flow of the system. Use a bigger
pump to increase the water flow if necessary.
4. Check the value of the water temperature sensor, to
ensure it works properly.
Too low suction
pressure
1. Drier filter is blocked
2. Electronic expansion valve
is not opened
3. Leakage of refrigerant
1. Change a new one
2. Repair or change a new one
3.Inspect the unit for leakage and fix it if any.
Discharge all refrigerant and charge the unit again with
right amount.
Unit can not defrost
properly
1. Coil temperature sensor
failure
2. Air inlet/outlet is blocked
1. Check the position and value of the coil temperature
sensor. Replace it if necessary.
2.Remove any object that blocks the air circulation of
the unit. Clean the evaporator coil occasionally.
Too high noise
from the water
pump, or no
water flow
when the water pump
is running
1. Lacking of water in water
system
2. Air exists in water system
3. Valves in water system are
not completely opened
1. Check the water filling device. Fill the system with
enough water.
2. Purging the air out.
3. Check all the valves to ensure they are fully opened.
4. Clean the water filter
4. Water filter is dirty or blocked
13. Trouble-shooting
105